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  1. <?php
  2.     if($_POST["username"]=="abc" && $_POST["passwd"]=="123")
  3.     {
  4.         $login="yes";
  5.     }
  6.     if($login=="yes")
  7.     {
  8.         echo "登入成功!";
  9.     }  else {
  10.         echo "登入失敗!";
  11.     }
  12. ?>
Success #stdin #stdout #stderr 0.01s 20568KB
comments (?)
stdin
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Standard input is empty
stdout
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登入失敗!
stderr
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PHP Notice:  Undefined index: username in /home/NLnzl3/prog.php on line 2
PHP Notice:  Undefined variable: login in /home/NLnzl3/prog.php on line 6
https://ideone.com/U97Pk6
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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